Spray nozzle



Apr., 24, 1923..

T. W MURPHY ET AL NOZZLE Filed Jn. 6,

f'atented Apr. Edi.,

lt. "l" tli riaoiuas w. iauarirr am) wiraijr'enaw ezaianncni, or ri-irnanntriira, rannsumienia.

seans Moneta.

.application filed January 1919. Elerial Nmfi'f.

To allY ihom ii' may co'ficem:

Be it known that we, THoMAs WL li'lnmnnr, a citizen of the United States. and VVLADY- siaxn' (ffzaunncm, a citizen of Poland, re sidingv i'n lthiladelphia, Pennsylvania, have invented ipray Nozzles, of which the following is a specification.

One object of our in'vention is topi'ovide a substantial and inexpensive device for Iinelydividing liquids such as water, oil, acid, etc.9 when these are supplied under high p1essure;-the various parts being' of such design as to permit of their being easily and quiekly cleaned usually without remoifial from t-heii` supply connectionsl 1It is further desired to provide a spray' nozzle which while having relativelyilarge and i therefore easlly i cleaned passages or ohannelsyshall have these so disposed and formed that there shall be but a relatively small flow of liquid through them under given pressure conditions, the arrane'ement of parts being such as to deliver the liquid in the formof a wide angle spray or conical atomized sheet. i

Another objectof the invention is to pro- Vide a nozzle of such construction as to be particularly adapted for manufacture out of porcelain or stoneware in order that while being' acid-proof, z it shall at the same time be relatively inexpensive as well as durable. These objects and other advantageous ends we attain as hereinafter set lorth, reference being' had to the accompanying drawingsl` in which,

Fig. 1 is a Vertical section of a relatively simple form of spray nozzle constructed according` to our invention;

Figs. 2 and 3 are respectively a Vertical section, and a plan of the defleeting element forming part of the nozzle shown in Figi: l;

In the above drawinfrs 1 represents the end portion of a conduit which may be of lead. having` internal threads for the reception of a. cap or cover member 2. The caifity of this cup is cylindrical in form and has at one end a relatively restricted central outlet 3 whose outer portion is fiared, the bottom or seating face of the cavity from which the Outlet opens being' preferably fiat or plane.

Within. the cavity is mounted a member 4: which may be comparatively loosc or snuo; fitting, having' one face flat for coaction with the flat face of the cavity and provided with aNtail 5 projecting from its opposite face.

Ill)

The member has at the center of its flat face a spherically Curved eavit-y or depresson 6 of somewhat larger diameter than the adjacent part of the Outlet, and this cavity is entered in the present case substantially taugentially, by two or any othersuitable number of passages or ports 7 formed iu the fiat face of the member at approxiinately opposite points and havingv their o-uter ends continued rearwardly along the sides of the member as indica-ted at 8 so that they open on its second face and communicate With the main part of the cap cavity. Liquid is thus free to. flow from the interior of the cayty of the cap through these side passages 8 and 'the passages 7 into the central recess 6 and it is noted that `vthe latter passages preferably enter said recess at approximately opposite points thereof. 1 i

llVhile the cap 2 as well as the memberfl may be made of any material which will suit them for a `given work, we so design them that they may conveniently be made of percelain or earthenware and in order to pre- `Vent leakage between such an earthenware cap 2 and the pipe 1, a gaslret or washer 9 is mounted within the threaded end of said conduit in position to be cngagedby the inner -edg'e of the cap 2 when this has :been screwed into position.

Under conditions of operation when a liquid such as water under pressure is supplied to the conduit 1, it enters the cap 2 and acts to yieldingly hold the fiat face of the niem-- her against the flat face or end of the cap cavity with its recess (i .immediately adjaeent and coaxial with the out`et passagze 3., so that said member may be forcibly raisedv or moved away from said disc by suitable means when it is dcsired to clean the nozzle. The liquid then 'Flows through the side passagzjes 8 of the member and enters the rccess (i at coniparatiyely opposite points thereof througrl'i the passages 7, so that it is given a i'otary morcment by reason of the relativc positious of these latter Channels. Since the rccess (i is immediateli7 adjacent and in line With the inner end of the outlet passage Il, the liquid passes out through this latter with a rotary movement which when it iinally delirercd from the flarino' outer part of said passage, causes it to assume the general form of a conical sheet composed of atomized or tinely divided particles. The fineness of the subdivision of the liquid may be Varied by altering the pressure at which it is supplied to the conduit 1 as well as by the relatire proportion and disposition of the Various channels 8, 7, 6 and 3.

f it be desired to increase the rate of de livery of the liquid from the nozzle or to cover the area which the spray Strikes with approximate uniformity, we may provide a passage 1.0 extending axially through the member and its tail, and this results in the delivery7 to the recess of the member of a jet which is there broken up by the centrifural action of the jets from other ports. The liquid is then delivered from the outlet in the form of an evenly divided spray strikingz approximately uniformly over the area upon which it. is directed.

It is particularly to be noted that since the 'face of the member llin which the recess 5 and Channels 7 are formed is flat as is also the end of the cap 2 with which this member coacts, it is possible to easil7 construct these parts of porcelain or stoneware ercn in relatively small sizes. The construction thus lends itself particularly to the manufacture of nozzles for use in finely dividing or atomizing liquids having a corrosive or an erosive action7 especially where such devices are exposed to the action of corrosive ga-ses or liquids.

A vital feature of the inrention resides in the ease with which the nozzle may be cleaned while in use without the necessity for taking itapart, since when liquid under pressure is supplied to the conduit 1 the comparatively loose or snug-fitting member a forced toward the outlet end of the cap 2. from which it maiT be raised by a wire or pin inserted through the outlet passagje The flow of liquid following this moveinent of the member will dislodge any solid matter which may have partially or wholly stopped the flow of liquid through the channels in the nozzle. lVhen necessary, the interior of the nozzle may be opened for insepction and Cleaning by unscrewing the cap from the pipe and it is obviously of the simplest construction since it includes hut three parts in addition to the ;zasket or washer 9.

From the foreg'oing description it will be noted that our nozzle is inexpeusirc. is not likely to getout of order or iasily clog`` and may be easily cleaned by the inscrtiou of' a pin or the like through its outletl passage EF so as to raise the` member et temporaril \v from its seat and thercafter permit it to return thereto when said pin is remored h reason of the pressure exerted upon it by the liquid.

I elaiin:

1. The combination in a nozzle of a hollow porcelain cap having a fiat inner surface and an outlet opening therefrom; with a. loose porcelain member in the cap having' a flat face uormally engagingz the Hat face thereof and formed with a recess adjaccnt the Outlet opening`l said member being freely movable towa-rd and from said fiat face of the cap and havingr passages leading to the recess.

2. The combination in a nozzlc of a hollow cap having: a. flat inner surface and an outlet openingr therefrom; with a loose member in the cap havin; r a flat face normalhv engaging the flat inner surface thereof and formed with a recess adjacent tln` outlct opening'` said member beiu r freeliv movahle toward and from said Outlet. and havingY passagres leading from the hollow of the cap to the recess, there beingr an axially placed passage extending through said member into its recess.

In witness whercof we afiix our signatures.

THOMAV XV. MURPHY lVLADYLUV CZ A R NE CKT. 

